#include<iostream>
#include<cstring>
using namespace std;

char c[3000][3000];

int main()
{    
	int n, h = 2, w = 4;
	cin >> n;
	memset(c, ' ', sizeof(c));
	c[1][1] = c[2][2] = '\\';
	c[1][2] = c[1][3] = '_';
	c[1][4] = c[2][3] = '/';
	//形成倒南蛮图腾
	for (int k = 1; k < n; k++) {
		for (int i = 1; i <= h; i++) {//向右复制图形
			for (int j = 1; j <= w; j++) {
				c[i][w + j] = c[i][j];
			}
		}
		for (int i = 1; i <= h; i++) {//向下
			for (int j = 1; j <= w; j++) {
				c[i + h][j + w / 2] = c[i][j];
			}
		}
		w *= 2;
		h *= 2;
	}
	for (int i = h; i >= 1; i--) {
		for (int j = w; j >= 1; j--) {
			cout << c[i][j];
		}
		cout << endl;
	}

	return 0;
}

第12行，如果一开始不把字符数组c内元素初始化为' '的话，输出就会成没有前导空格的情况，为什么，有无大神解答，谢谢！